HomeMy WebLinkAbout06-07-2017 PC Correspondence - San Luis Ranch (Cross) 3
Meeting: PC Q .' - - L -1 --
From: Brett Cross < Item: - S(A LV
Sent: Wednesday, June 07, 2017 2:05 PM
To: Bochum, Tim; Grigsby, Daryl; Hudson, Jake; Advisory Bodies
Cc: E-mail Council Website
Subject: San Luis Ranch 6/7/2107 Cut -Through Analysis Oceanaire Dr.
RECEIVED
CITY OF SAN LUIS OBISPO
JUN 0 7 2017
COMMUNITY DEVELOPMENT
Transportation Operations Supervisor, Jake Hudson, during the Planning Commission hearing 5/25/17 in response to my
concerns regarding potential/increased Cut -Through traffic impacts along Oceanaire between Madonna and Los Osos Valley Rd
due to San Luis Ranch Project explained he didn't see this as an issue.
I would respectfully submit that the traffic analysis done for the Dalidio Ranch project EIR calculated the expected traffic volume
on Oceanaire Dr between Madonna and Los Osos Valley Rd and could not account for the excess volume that was observed.
November 2003
Dalidio/San Luis Marketplace Annexation and Development Project EIR Section 4.10 Traffic and Circulation
f. Existing Neighborhood Traffic. The closest residential development to the project site is located to the south and west of the
Site. Congestion at the Madonna Read/LOVH Intersection has previously raised questions regarding the amount of"cut-through"
traffic that uses Oceanaire Drive north of Madonna Road. Two of the higher volume movements governing operation of the
intersection are the westbound right -turn volume from Madonna Road to LOVR and the southbound left -turn volume from LOVR
to Madonna Road. Queues form on both of these movements resulting in temporary delays, but the intersection is currently
operating at LOS D and no excessive delays were observed on a typical weekday. Some residents in the adjacent
neighborhood (north of Madonna Road and east of LOUR) have indicated that traffic cuts through the neighborhood on
Oceanaire Drive to avoid waiting at the Madonna Road/LOUR signalized intersection. Previous reviews of the intersection count
data at Madonna Road/LOVR and Madonna Road/Oceanaire Drive did not show an obvious pattern of cut -through traffic during
the peak hours, when congestion was at its worst during the PM peak hour.
To address this issue, a 48-hour traffic count was conducted in May 2003 on Oceanaire Drive north of Madonna Road to
determine the average daily traffic volume. This count showed a an average volume of 5,400 vehicles per day (vpd), which is
substantially higher than the volume of 2,300 4,600 (vpd) counted three years ago. The land uses in this area include over 460
dwelling units and the 380 -student C.L. Smith Elementary School that serves the immediate neighborhood as well as residential
areas to the north and west. These uses would be expected to generate approximately 4,970 trips per day, but this traffic would
be distributed to three locations: 1) the Madonna Road/Oceanaire Drive intersection, 2) the LOVR/Oceanaire Drive intersection,
and 3) the LOVR/Royal Way intersection. Thus, the existing daily volume on Oceanaire Drive is higher than expected. Street
volumes can fluctuate during seasonal or special event functions such as evening activities at the elementary school.
The City of San Luis Obispo addresses residential traffic issues in its 1998 Neighborhood Traffic Management (NTM) Guidelines
and in the Circulation Element of the GeneralPlan. In the NTM Guidelines, a "maximum desired average daily traffic (ADT)
volume" has been established for various street classifications. Oceanaire Drive is classified as "Residential Collector" with a
maximum desired ADT of 3,000 vehicles per day. The existing volume at this location exceeds the City's guidelines.
Dalidio/San Luis Marketplace Annexation and Development Project EIR Section 4.10 Traffic and Circulation
City of San Luis Obispo
4.10-11
The posted speed limit on Oceanaire Drive is 25 miles per hour and there are several stop signs located at cross streets
between the intersections at Madonna Road and LOVR. Although this design is not considered attractive to "cut -through"
drivers, the potential for cut -through traffic on this street does exist and would likely increase with substantial degradation of
operations at the Madonna Road/LOVR intersection.
Sincerely,
Brett Cross
San Luis Obispo, CA